Project 3:

Masato's last battle with Aen and Tau unleashed a frightening new personality and now all wonder if they really understand the true relationship between Masato and the Zeorymer robot. When Miku is kidnapped by an equally curious Yuratei, Masato is forced to face his greatest challenge all by himself: Rose C'est La Vie of the Moon, one of the Hakkeshu's most powerful battle machines. Without Miku to help pilot the Zeorymer, Masato is an easy target for his new enemy, the mysterious Ritsu. But in the midst of this latest duel, more shocking secrets about the two Zeorymer pilots are about to be revealed...

Project 4:

Masato was simply born to be the Zeortmer's pilot...or was he? Now all secrets are revealed, and no one is quite sure who is behind the plot which will either lead to world domination or absolute extinction. As Masato fights to regain his old personality, Yuratei sends the last of the Hakkeshu pilots to destroy him and Zeorymer once and for all. As both sides meet for the final showdown, the world teeters on the knife-edge of nuclear destruction, and the true face of the Hades Project is discovered at last!